File - Dr. Jerry Cronin
... – Blood flows from high to low pressure • Controlled by timing of contractions • Directed by one-way valves ...
... – Blood flows from high to low pressure • Controlled by timing of contractions • Directed by one-way valves ...
Right ventricular dysfunction in advanced heart failure
... Due to its peculiar anatomic characteristics, it is easier for the right ventricle to tolerate volume overload than pressure ...
... Due to its peculiar anatomic characteristics, it is easier for the right ventricle to tolerate volume overload than pressure ...
Chapter12_Detailed_Answers
... nonexistent. Instead of P waves there is a chaotic baseline of fibrillatory waves, or f waves, representing atrial activity. This is a key characteristic of atrial fibrillation. There are no PR intervals present because of the absence of P waves. ...
... nonexistent. Instead of P waves there is a chaotic baseline of fibrillatory waves, or f waves, representing atrial activity. This is a key characteristic of atrial fibrillation. There are no PR intervals present because of the absence of P waves. ...
Diltiazem (Cardizem) - Advocate Health Care
... treat the patient with 200 ml of saline IVP bolus. Diltiazem contraindications: avoid use in the setting of severe hypotension or cardiogenic shock. Do not use in the patient with a wide complexed QRS – may cause hemodynamic deterioration which may lead to VF. Do not use in patients in rapid atrial ...
... treat the patient with 200 ml of saline IVP bolus. Diltiazem contraindications: avoid use in the setting of severe hypotension or cardiogenic shock. Do not use in the patient with a wide complexed QRS – may cause hemodynamic deterioration which may lead to VF. Do not use in patients in rapid atrial ...
Recurrent aborted sudden cardiac death with seizures and
... seizures. Seizures could be hereditary or symptomatic. Except for the two seizures in association with hypokalemia, no other seizures were ever reported. She never took antiepileptic drugs and the family history was negative for epilepsy. She had no head trauma and no history of complications during ...
... seizures. Seizures could be hereditary or symptomatic. Except for the two seizures in association with hypokalemia, no other seizures were ever reported. She never took antiepileptic drugs and the family history was negative for epilepsy. She had no head trauma and no history of complications during ...
Cardiac Science - Alberta Industrial Fire Protection Association
... Rapid heartbeat—ventricular tachycardia (VT) Chaotic heartbeat—ventricular fibrillation (VF) • The heart is unable to pump blood effectively, blood flow to the brain abruptly stops, and victim quickly loses consciousness • Death follows within minutes unless normal rhythm is restored • Cardiac arres ...
... Rapid heartbeat—ventricular tachycardia (VT) Chaotic heartbeat—ventricular fibrillation (VF) • The heart is unable to pump blood effectively, blood flow to the brain abruptly stops, and victim quickly loses consciousness • Death follows within minutes unless normal rhythm is restored • Cardiac arres ...
Myocardyal fibrosis markers: A new target in Cardiovascular
... add these elements in the daily practice; researchers have observed and called them emergent risk factors. We can find two types of collagen fibers in the normal adult heart, type I and III, produced by fibroblasts and myofibroblasts. These fibers provide structural support and give the heart proper ...
... add these elements in the daily practice; researchers have observed and called them emergent risk factors. We can find two types of collagen fibers in the normal adult heart, type I and III, produced by fibroblasts and myofibroblasts. These fibers provide structural support and give the heart proper ...
Proofreading
... repeatable. This issue is important when the heart rate is less than 50 bpm or more than 120 bpm. Accurate measurement of the QT interval is also important in athletes and children who have a significant beat-tobeat variability of the R–R interval. In such cases, prolonged and numerous recordings ma ...
... repeatable. This issue is important when the heart rate is less than 50 bpm or more than 120 bpm. Accurate measurement of the QT interval is also important in athletes and children who have a significant beat-tobeat variability of the R–R interval. In such cases, prolonged and numerous recordings ma ...
Implantable Cardioverter-Defibrillator
... Pacemakers and Implantable Cardioverter-Defibrillators Permanent Pacemakers • A variety of factors contribute to optimal cardiac functioning, including atrioventricular (AV) synchronization and the chronotropic and inotropic responses to neuro-hormonal stimuli. • Alterations in the normal sequence o ...
... Pacemakers and Implantable Cardioverter-Defibrillators Permanent Pacemakers • A variety of factors contribute to optimal cardiac functioning, including atrioventricular (AV) synchronization and the chronotropic and inotropic responses to neuro-hormonal stimuli. • Alterations in the normal sequence o ...
Vulnerable Brain and Ventricular Assist Devices
... significantly higher incidence of diabetes mellitus, history of preimplant stroke, and aortic cross-clamping with cardioplegic arrest during their device implant as well as anticoagulation targets. Importantly, the 30-day mortality is high at 25%.12 Clinical trials and registry series have pointed t ...
... significantly higher incidence of diabetes mellitus, history of preimplant stroke, and aortic cross-clamping with cardioplegic arrest during their device implant as well as anticoagulation targets. Importantly, the 30-day mortality is high at 25%.12 Clinical trials and registry series have pointed t ...
Cardiac Monitoring Atrial Fibrillation
... Each small square is 1 mm in length and represents 0.04 seconds. Each larger square is 5 mm in length and represents 0.2 seconds. Voltage is measured along the vertical axis - 10 mm is equal to 1mV in voltage. Heart rate can be easily calculated from the EKG strip: ...
... Each small square is 1 mm in length and represents 0.04 seconds. Each larger square is 5 mm in length and represents 0.2 seconds. Voltage is measured along the vertical axis - 10 mm is equal to 1mV in voltage. Heart rate can be easily calculated from the EKG strip: ...
S 132 Abstracts lion. Eur J Echocardiography Abstracts Supplement
... Purpose: Similar grade el the lell ventricular (LV) syslolic injury can coexisl wilh diflerenl grade of diastolic dysfunction. Patients wilh reslriclive inflow pallern have more severe dysfunction than those wilh impaired relaxalion. Myocardial pedormance index (MPI) (Tel inde(), and flow propagatio ...
... Purpose: Similar grade el the lell ventricular (LV) syslolic injury can coexisl wilh diflerenl grade of diastolic dysfunction. Patients wilh reslriclive inflow pallern have more severe dysfunction than those wilh impaired relaxalion. Myocardial pedormance index (MPI) (Tel inde(), and flow propagatio ...
File
... P Wave - Buried in preceding T wave P-R Interval - Depends on site of supraventricular pacemaker Impulses stimulating heart are not generated by sinus node, instead from a collection of tissue around the AV node ...
... P Wave - Buried in preceding T wave P-R Interval - Depends on site of supraventricular pacemaker Impulses stimulating heart are not generated by sinus node, instead from a collection of tissue around the AV node ...
MYOCARDIAL PERFORMANCE
... the stroke volume response to increased afterload will be limited by ventricular filling despite normal contractile properties. A relevant clinical example of afterload-preload mismatch is the use of dynamic indices such as stroke volume variability or pulse pressure variability to predict the cardi ...
... the stroke volume response to increased afterload will be limited by ventricular filling despite normal contractile properties. A relevant clinical example of afterload-preload mismatch is the use of dynamic indices such as stroke volume variability or pulse pressure variability to predict the cardi ...
Computational modeling of acute myocardial
... in many fields of biology and engineering. Treatment of myocardial infarction has been evolving rapidly with the understanding of the mechanisms underpinning its progression. There is a clear correlation between infarct size and ejection fraction. Therefore, many clinical therapies have been devoted ...
... in many fields of biology and engineering. Treatment of myocardial infarction has been evolving rapidly with the understanding of the mechanisms underpinning its progression. There is a clear correlation between infarct size and ejection fraction. Therefore, many clinical therapies have been devoted ...
Primary Cardiac Neoplasms
... Prognosis and outcome • The prognosis for apical CVD depended on associated intracardiac malformations and was generally good after repair. • The outcome for nonapical CVD was also excellent, with even a total regression in some cases • CVA had a poor prognosis with frequent fatal cardiovascular co ...
... Prognosis and outcome • The prognosis for apical CVD depended on associated intracardiac malformations and was generally good after repair. • The outcome for nonapical CVD was also excellent, with even a total regression in some cases • CVA had a poor prognosis with frequent fatal cardiovascular co ...
Morphologic demonstration of spontaneous and
... ICD indicates implantable cardioverter defibrillator; VSD, ventricular septal defect; –, not available. ...
... ICD indicates implantable cardioverter defibrillator; VSD, ventricular septal defect; –, not available. ...
Sudden Cardiac Death With Apparently Normal Heart
... In subgroup A2 hearts, a nonspecific abnormality was present, but a definite pathological diagnosis could not be made. These nonspecific abnormalities included left ventricular hypertrophy (left ventricular wall thickness of compact myocardium ⬎1.6 cm) found in two thirds of the cases (50 of 76 hear ...
... In subgroup A2 hearts, a nonspecific abnormality was present, but a definite pathological diagnosis could not be made. These nonspecific abnormalities included left ventricular hypertrophy (left ventricular wall thickness of compact myocardium ⬎1.6 cm) found in two thirds of the cases (50 of 76 hear ...
Full Text - Archives of Cardiovascular Imaging
... mean of intra ventricular diameters and heart rate had been significantly changed among athletes of endurance-training regimen after beginning the training regimens. Previous studies reported the high prevalence of LV dilation among endurance-trained athletes (7, 14). DuManoir et al. recently report ...
... mean of intra ventricular diameters and heart rate had been significantly changed among athletes of endurance-training regimen after beginning the training regimens. Previous studies reported the high prevalence of LV dilation among endurance-trained athletes (7, 14). DuManoir et al. recently report ...
beta-blockers: Are they useful in arrhythmias?
... predominant role of beta-blockers in AF is for rate control, by virtue of their AV node-blocking action. For acute control of heart rate, especially in acute myocardial infarction complicated by AF, intravenous esmolol is the recommended agent.8, 9 For long-term use, beta-blockade is a safe therapy ...
... predominant role of beta-blockers in AF is for rate control, by virtue of their AV node-blocking action. For acute control of heart rate, especially in acute myocardial infarction complicated by AF, intravenous esmolol is the recommended agent.8, 9 For long-term use, beta-blockade is a safe therapy ...
Right ventricular dilated cardiomyopathy - Heart
... Right ventricular dilated cardiomyopathy mias occurred in five patients (paroxysmal tachycardia in two, atrial fibrillation in three, and atrial flutter in two). Two patients had evidence of sinoatrial disease with changing supraventricular arrhythmias, one of whom required a permanent pacemaker bec ...
... Right ventricular dilated cardiomyopathy mias occurred in five patients (paroxysmal tachycardia in two, atrial fibrillation in three, and atrial flutter in two). Two patients had evidence of sinoatrial disease with changing supraventricular arrhythmias, one of whom required a permanent pacemaker bec ...
Rhythm disorders in neonates
... tachycardia, it is important to locate the P wave on the electrocardiogram during the tachycardia. In atrioventricular reentry tachycardia there is a retrograde P wave which is inscribed after the QRS complex. For these arrhythmias atrial and ventricular tissue is required to maintain the reentry ci ...
... tachycardia, it is important to locate the P wave on the electrocardiogram during the tachycardia. In atrioventricular reentry tachycardia there is a retrograde P wave which is inscribed after the QRS complex. For these arrhythmias atrial and ventricular tissue is required to maintain the reentry ci ...
Nonuniformity: A physiologic modulator of contraction and relaxation
... activity is, however, not entirely uniform. Fibers in different parts of the heart are activated at relatively disparate times, attaining differences of up to 80 to 100 ms in the normal heart because the wave of excitation penetrates the ventricularwall from the endocardial to the epicardial surface ...
... activity is, however, not entirely uniform. Fibers in different parts of the heart are activated at relatively disparate times, attaining differences of up to 80 to 100 ms in the normal heart because the wave of excitation penetrates the ventricularwall from the endocardial to the epicardial surface ...
Rhythm-control strategies were not better than
... choose a “curative” approach, first-line treatment using rhythm control is a reasonable alternative. An additional advantage to rate control is the understood need to use aspirin, or more typically warfarin, indefinitely to prevent thromboembolic events. The AFFIRM and RACE trials allowed clinicians ...
... choose a “curative” approach, first-line treatment using rhythm control is a reasonable alternative. An additional advantage to rate control is the understood need to use aspirin, or more typically warfarin, indefinitely to prevent thromboembolic events. The AFFIRM and RACE trials allowed clinicians ...
Slide 1 - Annals of Internal Medicine
... Polygraph tracing from the left atrium and ventricle of a frog with our measurements and labeling of the laddergram.AVSAAVThe following phenomena are seen: beats occur in groups, the atrioventricular ( ) pulse intervals gradually increase until the pause, the pause is less than twice the preceding v ...
... Polygraph tracing from the left atrium and ventricle of a frog with our measurements and labeling of the laddergram.AVSAAVThe following phenomena are seen: beats occur in groups, the atrioventricular ( ) pulse intervals gradually increase until the pause, the pause is less than twice the preceding v ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.